Adsorption function section and air handling unit

Abstract

The present invention discloses an adsorption functional section and an air handling unit, and relates to the technical field of air handling equipment, wherein the adsorption functional section includes a plurality of adsorption modules, and the plurality of adsorption modules are arranged at intervals along the same straight line; each of the adsorption modules includes a plurality of moisture absorption layers and a plurality of heat exchange layers, and the plurality of moisture absorption layers and the plurality of heat exchange layers are alternately stacked, and two adjacent heat exchange layers are spaced to form a microchannel, and each of the moisture absorption layers is installed in a microchannel, and the moisture absorption layer is used to absorb moisture from the air, and the microchannel is used to exchange heat and cool the inflowing air with the heat exchange layer. The technical effect of the technical solution provided by the present invention allows the adsorption functional section to integrate dehumidification function and cooling function, thereby reducing the required functional sections, thereby reducing the volume of the air handling unit.

Description

Technical Field

[0001] The invention relates to the technical field of air handling equipment, and in particular to an adsorption functional section and an air handling unit. Background Art

[0002] In the application of traditional rotary dehumidifier units, the regeneration and desorption process usually requires hot water above 80°C. This process not only consumes a large amount of hot water, but the preparation of high-temperature hot water often relies on boilers, resulting in high energy consumption. In addition, in conventional coil units, the volume of the rotor is large. In order to achieve a satisfactory dehumidification effect and meet the requirements of air supply status, the air before and after dehumidification still needs to be cooled through the surface cooling section. This not only increases the required functional sections, but also makes the arrangement of the unit quite difficult in the environment of dense plant pipelines. Summary of the invention

[0003] The main purpose of the present invention is to propose an adsorption functional section and an air handling unit, aiming to allow the adsorption functional section to integrate dehumidification function and cooling function, thereby reducing the required functional sections and thus reducing the volume of the air handling unit.

[0004] To achieve the above-mentioned purpose, the present invention proposes an adsorption functional section, which is applied to an air handling unit, and the adsorption functional section includes a plurality of adsorption modules, and the plurality of adsorption modules are arranged at intervals along the same straight line; each of the adsorption modules includes a plurality of moisture absorption layers and a plurality of heat exchange layers, and the plurality of moisture absorption layers and the plurality of heat exchange layers are alternately stacked, and a microchannel is formed between two adjacent heat exchange layers, and each of the moisture absorption layers is installed in a microchannel, and the moisture absorption layer is used to absorb moisture from the air, and the microchannel is used to exchange heat and cool the incoming air with the heat exchange layer.

[0005] In one embodiment, each of the heat exchange layers has at least one flow channel, which is used to circulate water for heat exchange; each of the adsorption modules also includes at least one water inlet pipe and at least one water outlet pipe, the water inlet pipe is connected to one end of the plurality of flow channels, and the water outlet pipe is connected to the other end of the plurality of flow channels.

[0006] In one embodiment, the water inlet pipe includes a main water inlet pipe section and multiple water inlet pipe sections, one end of each of the water inlet pipe sections is respectively connected to the main water inlet pipe section, and the other end of each of the water inlet pipe sections is connected to one end of the multiple flow channels of the same adsorption module;

[0007] The water outlet pipe includes a main water outlet pipe section and multiple water outlet pipe sections, one end of each of the water outlet pipe sections is respectively connected to the main water outlet pipe section, and the other end of each of the water outlet pipe sections is connected to the other end of the multiple flow channels of the same adsorption module.

[0008] In one embodiment, the water flow direction of the flow channel is opposite to the air flow direction of the microchannel.

[0009] In one embodiment, each of the heat exchange layers includes a plurality of the flow channels, and the plurality of the flow channels are arranged in a mesh shape and are connected.

[0010] In one embodiment, the adsorption functional section further includes a plurality of baffles, each of the baffles is sealingly installed between two adjacent adsorption modules, and the plurality of baffles are alternately arranged left and right along the arrangement direction of the adsorption functional section.

[0011] The present invention also proposes an air handling unit, which includes a primary filter section, a medium filter section, a surface cooling section, a water washing and spraying section, a fan section, a chemical filter section, a high-efficiency filter section and an air outlet section which are connected in sequence, and at least one adsorption functional section as described above is arranged between the surface cooling section and the water washing and spraying section; and a bypass static pressure box is arranged above the surface cooling section and the adsorption functional section, and the bypass static pressure box is provided with at least three bypass valves, two of which are arranged corresponding to the air inlet side and the air outlet side of the surface cooling section, and the remaining one is arranged corresponding to the adsorption functional section.

[0012] In one embodiment, a first valve is respectively disposed on the air inlet side and the air outlet side of the adsorption functional section, and the bypass valve is located outside the position between the two first valves.

[0013] In one embodiment, the air handling unit further comprises at least two adsorption functional sections connected in sequence, and both of the two adsorption functional sections are located between the surface cooling section and the water washing spray section; and the bypass static pressure box covers both of the adsorption functional sections.

[0014] In one embodiment, the bypass static pressure box includes a main air duct and a first return air duct, the three bypass valves are located in the main air duct, the first return air duct is provided with a second valve, and the second valve is used to open and close the first return air duct;

[0015] And / or, a third valve is provided between the water washing spray section and the fan section, and the third valve is used to open and close the secondary return air.

[0016] The adsorption functional section of the technical solution of the present invention includes multiple adsorption modules, and the multiple adsorption modules are arranged at intervals along the same straight line; each adsorption module includes multiple moisture absorption layers and multiple heat exchange layers, and the multiple moisture absorption layers and the multiple heat exchange layers are alternately stacked, and two adjacent heat exchange layers are spaced to form a microchannel, and each moisture absorption layer is installed in a microchannel, and the moisture absorption layer is used to absorb moisture from the air, and the microchannel is used to exchange heat and cool the incoming air with the heat exchange layer; each adsorption functional section of the present invention includes multiple moisture absorption layers and multiple heat exchange layers, and the moisture absorption layers and the heat exchange layers are alternately stacked. This design is not only used for efficiently adsorbing moisture in the air, but also for heat exchange and cooling the incoming air, so that the adsorption functional section simultaneously combines dehumidification function and cooling function. The air handling unit using the adsorption functional section of the above structure can reduce the required functional sections, thereby reducing the volume of the air handling unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of the adsorption module provided by the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the adsorption functional section provided by the present invention when adsorbing air;

[0020] Figure 3 This is a schematic diagram of the structure of the adsorption functional section provided by the present invention when desorbing air;

[0021] Figure 4 A schematic diagram of the structure of an air handling unit provided by the present invention;

[0022] Figure 5 for Figure 4 AA section diagram in;

[0023] Figure 6 for Figure 4 Schematic diagram of the BB cross section.

[0024] Description of Figure Numbers:

[0025] 1. Adsorption functional section; 10. Adsorption module; 11. Moisture absorption layer; 12. Heat exchange layer; 10a. Microchannel; 13. Water inlet pipe; 131. Total water inlet pipe section; 132. Water inlet pipe section; 14. Water outlet pipe; 141. Total water outlet pipe section; 142. Water outlet pipe section; 15. Baffle; 2. Primary filtration section; 3. Medium efficiency filtration section; 4. Surface cooling section; 5. Water washing and spraying section; 6. Fan section; 7. Chemical filtration section; 8. High efficiency filtration section; 9. Air outlet section; 100. Bypass static pressure box; 101. Bypass valve; 101a. Sub-bypass valve; 102. First return air duct; 103. Second valve; 110. First valve; 120. Third valve.

[0026] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0030] The present invention provides an adsorption functional section.

[0031] See also Figures 1 to 4In one embodiment of the present invention, the adsorption functional section 1 includes a plurality of adsorption modules 10, and the plurality of adsorption modules 10 are arranged at intervals along the same straight line; each adsorption module 10 includes a plurality of moisture absorption layers 11 and a plurality of heat exchange layers 12, and the plurality of moisture absorption layers 11 and the plurality of heat exchange layers 12 are alternately stacked, and two adjacent heat exchange layers 12 are spaced to form a microchannel 10a, and each moisture absorption layer 11 is installed in a microchannel 10a, and the moisture absorption layer 11 is used to absorb moisture from the air, and the microchannel 10a is used to exchange heat and cool the inflowing air with the heat exchange layer 12.

[0032] Specifically, the internal structure of the adsorption module 10 is as follows: the moisture absorption layer 11 is made of an adsorption material with good moisture absorption performance. Each moisture absorption layer 11 is installed in a microchannel 10a to absorb moisture in the air. The heat exchange layer 12 is made of a material with good thermal conductivity and is used to exchange heat with the air to reduce the air temperature. Two adjacent heat exchange layers 12 are spaced to form a microchannel 10a to guide the air flow and realize heat exchange and cooling between the air and the heat exchange medium in the heat exchange layer 12.

[0033] The air enters the adsorption functional section 1 and first flows through the moisture absorption layer 11. The moisture absorption layer 11 absorbs the moisture in the air, making the air dry, and dehumidifying the air in the adsorption process. The dehumidified air continues to flow through the microchannel 10a, and exchanges heat with the heat exchange medium in the heat exchange layer 12. The temperature of the dehumidified air decreases. The temperature and humidity of the air passing through the heat exchange layer 12 are effectively controlled to meet the requirements of subsequent processes.

[0034] The adsorption functional section 1 includes a plurality of adsorption modules 10, which are arranged at intervals along the same straight line. This structural layout optimizes the smoothness of the air flow channel, reduces air flow resistance, and improves the overall adsorption efficiency. Compared with the prior art, this case requires less energy consumption when processing the same volume of air, so it has significant advantages in energy saving and emission reduction.

[0035] Each adsorption functional section 1 includes a plurality of moisture absorption layers 11 and a plurality of heat exchange layers 12, and the moisture absorption layers 11 and the heat exchange layers 12 are alternately stacked. This design is not only used to efficiently absorb moisture in the air, but also used to perform heat exchange and cooling on the incoming air, so that the adsorption functional section 1 combines the dehumidification function and the cooling function at the same time. The air handling unit using the adsorption functional section 1 with the above-mentioned structure can reduce the required functional sections, thereby reducing the volume of the air handling unit.

[0036] In one embodiment, see Figures 1 to 3 Each heat exchange layer 12 has at least one flow channel, which is used to circulate the heat exchange medium; each adsorption module 10 also includes at least one water inlet pipe 13 and at least one water outlet pipe 14, the water inlet pipe 13 is connected to one end of the multiple flow channels, and the water outlet pipe 14 is connected to the other end of the multiple flow channels.

[0037] The flow channel is used to circulate the heat exchange medium to ensure effective heat exchange between the medium inside the heat exchange layer 12 and the air in the moisture absorption layer 11. The design of the flow channel can be optimized according to specific heat exchange requirements, such as using a circular, rectangular or other suitable cross-sectional shape.

[0038] Specifically, each heat exchange layer 12 contains a plurality of flow channels, which are evenly distributed throughout the heat exchange layer 12, so that the medium can fully exchange heat with the air in the moisture absorption layer 11 when flowing through each flow channel. The size of the flow channel can be adjusted according to actual needs to meet different heat exchange efficiency requirements. Due to the existence of the flow channel, the medium can flow smoothly through each layer, so that heat can be fully exchanged in each layer, thereby improving the heat exchange efficiency of the entire system.

[0039] In addition, the design of the water inlet pipe 13 and the water outlet pipe 14 forms a complete closed circulation loop, so that the medium can form a closed flow path in the adsorption module 10, which can not only ensure that the medium can obtain sufficient heat exchange in each layer, but also avoid the problem of medium short circuit or leakage, thereby ensuring the stability and reliability of the heat exchange process. At the same time, it is convenient to control and manage the entire adsorption functional section 1.

[0040] When the adsorption functional section 1 is in the process of cooling, a medium of chilled water flows in the flow channel, and the purpose of cooling and dehumidification is achieved by heat exchange between the chilled water and the air in the moisture absorption layer 11 .

[0041] When the adsorption functional section 1 is in the desorption process, a medium containing hot water flows in the flow channel, and the hot water is used to perform heat exchange with the air in the moisture absorption layer 11 to achieve the purpose of heating and dehumidification.

[0042] In one embodiment, see Figures 1 to 3 The water inlet pipe 13 includes a main water inlet pipe section 131 and multiple water inlet pipe sections 132, one ends of the multiple water inlet pipe sections 132 are respectively connected to the main water inlet pipe section 131, and the other end of each water inlet pipe section 132 is connected to one end of multiple flow channels of the same adsorption module 10; the water outlet pipe 14 includes a main water outlet pipe section 141 and multiple water outlet pipe sections 142, one ends of the multiple water outlet pipe sections 142 are respectively connected to the main water outlet pipe section 141, and the other end of each water outlet pipe section 142 is connected to the other end of the multiple flow channels of the same adsorption module 10.

[0043] The main water inlet pipe section 131 is located at the upper downstream part of the system and is used to receive the heat exchange medium from the water source. One end of the multiple water inlet pipe sections 132 is connected to the main water inlet pipe section 131 through a connector, and the other end is connected to one end of the multiple flow channels in the adsorption module 10.

[0044] Specifically, each water inlet pipe section 132 is made of corrosion-resistant, high-strength materials to ensure the safe transportation of the fluid. The adsorption module 10 includes multiple flow channels. One end of the flow channel is connected to the water inlet pipe section 132, and the other end is connected to the water outlet pipe section 142. The outlet pipe 14 includes a total water outlet pipe section 141 and multiple water outlet pipe sections 142. One end of the multiple water outlet pipe sections 142 is connected to the total water outlet pipe section 141 through a connector, and the other end is connected to the other end of the multiple flow channels in the adsorption module 10. The total water outlet pipe section 141 is located in the lower upstream part of the system, and is used to discharge the medium after heat exchange.

[0045] In actual operation, the medium first enters the system through the main water inlet pipe section 131, and flows into the multiple flow channels of the heat exchange layer 12 through multiple water inlet pipe sections 132 in a one-to-one correspondence. When the adsorption functional section 1 is in the adsorption process, the medium of the chilled water exchanges heat with the air in the moisture absorption layer 11 through the flow channel to cool the air. After the heat exchange, the medium of the chilled water is collected into the main water outlet pipe section 141 through multiple water outlet pipe sections 142, and finally discharged from the system.

[0046] By adopting the combined design of the main water inlet pipe section 131 and the multiple water inlet pipe sections 132, the medium is evenly distributed to the multiple flow channels of the adsorption module 10. Compared with the prior art, this design effectively overcomes the problem of uneven distribution of the medium, so that each flow channel can obtain equal or nearly equal medium flow, thereby ensuring the uniformity and stability of the adsorption process.

[0047] In the present invention, the combination of the main water outlet pipe section 141 and the plurality of water outlet pipe sections 142 ensures that the medium in the main water outlet pipe section 141 can be discharged evenly and smoothly, thereby avoiding the problem of uneven medium discharge caused by excessive or insufficient local resistance.

[0048] In one embodiment, see Figures 1 to 3 The water flow direction of the flow channel is opposite to the air flow direction of the microchannel 10a.

[0049] Specifically, since the water flow direction of the flow channel is opposite to the air flow direction of the microchannel 10a, that is, the fresh air flow direction is opposite to the flow direction of the heat exchange medium from the water inlet pipe section 132 to the water outlet pipe section 142, the air and the medium adopt countercurrent heat exchange to enhance the heat exchange performance of the medium. When the medium and the air are in indirect contact for heat exchange, the heat exchange is more sufficient, the heat loss is effectively reduced, and the heat transfer is more efficient, thereby significantly improving the heat exchange efficiency. A single adsorption module 10 supplies water to multiple flow channels from a water inlet pipe section 132, and then flows out from the water outlet pipe section 142.

[0050] In one embodiment, see Figures 1 to 3 Each heat exchange layer 12 includes a plurality of flow channels, and the plurality of flow channels are arranged in a mesh shape and are connected.

[0051] Specifically, each heat exchange layer 12 is in the shape of a flat plate and is made of a high-strength, corrosion-resistant metal material. A plurality of flow channels are arranged in a mesh and are interconnected in each heat exchange layer 12. The cross-sectional shape of the flow channel can be circular, square or elliptical to adapt to the flow characteristics of different fluid media. The diameter or width of the flow channel can be designed according to actual application requirements to achieve the best heat exchange effect. The spacing between the flow channels can also be adjusted as needed to optimize fluid distribution and heat exchange efficiency.

[0052] The mesh arrangement and interconnection of multiple flow channels make the flow of fluid in the heat exchange layer 12 more uniform, avoiding local overheating or overcooling. The flow path of the heat exchange medium in the heat exchange layer 12 is greatly increased, so that the contact area between the air and the heat exchange medium is greatly increased, the heat absorption / dissipation strength of the metal wall plate is enhanced, and the cooling / heating effect of the air is directly enhanced, which not only improves the effect of heat exchange, but also reduces the risk of equipment damage or performance degradation caused by uneven heat distribution.

[0053] The multiple moisture-absorbing layers 11 of the adsorption functional section 1 greatly enhance the desorption and adsorption dehumidification effects. The special structure of the flow channel of the heat exchange layer 12 of the adsorption functional section 1 enables the air handling unit to only need medium-temperature chilled water during the air treatment process of dehumidification and cooling, eliminating the use of low-temperature chilled water, significantly reducing the energy consumption of the air handling unit, and at the same time reducing the hot air temperature required for desorption. The hot air at this temperature can be produced from various waste heat in the factory, so that the boiler energy consumption is 0 during the air treatment process.

[0054] In one embodiment, see Figures 1 to 3 The adsorption functional section 1 further includes a plurality of baffles 15 , each baffle 15 is sealed and installed between two adjacent adsorption modules 10 , and the plurality of baffles 15 are alternately arranged left and right along the arrangement direction of the adsorption functional section 1 .

[0055] The adsorption functional section 1 includes a plurality of adsorption modules 10, and the adsorption modules 10 are sequentially arranged along the arrangement direction of the adsorption functional section 1. A baffle 15 is arranged between each adjacent adsorption module 10. The baffle 15 is installed in a sealed manner to ensure that a good sealing environment is formed inside the adsorption functional section 1. The material of the baffle 15 is preferably stainless steel or corrosion-resistant plastic to meet the corrosion resistance, wear resistance and other performance requirements of the adsorption functional section 1 during operation. The baffle 15 is in the shape of a flat plate, and its size corresponds to the size of the adsorption module 10. The baffle 15 is alternately arranged left and right along the arrangement direction of the adsorption functional section 1.

[0056] Specifically, a baffle 15 is set on the right side of the first adsorption module 10, a baffle 15 is set on the left side of the second adsorption module 10, and so on. The sequential arrangement allows the incoming air flow to flow in and out through the side of a single adsorption module 10, increasing the heat exchange area for air adsorption, desorption, and cooling. In addition, for different air handling units, it is only necessary to increase the length of the air flow direction of the adsorption module 10 to increase the air contact area, which is convenient for the modification of the air handling unit. The microchannels 10a between the heat exchange layers 12 and the adsorption materials of the dehumidification layer are staggered in the height direction, ensuring the cooling of the air during adsorption, and the lower adsorption temperature improves the adsorption efficiency.

[0057] This arrangement helps to improve the adsorption efficiency of the adsorption functional section 1 and reduce the resistance of the airflow inside the adsorption functional section 1. The baffle 15 is installed by welding or bolting to ensure the sealing effect between the baffle 15 and the adsorption module 10. The welding method is preferably argon arc welding, and the bolt connection method is preferably stainless steel bolts.

[0058] The design of the baffle 15 changes the flow direction of the gas when it flows through the adsorption module 10, increasing the chance of contact between the gas and the adsorbent, thereby significantly improving the adsorption efficiency. Compared with the prior art, the present invention can achieve a higher adsorption effect under the same conditions, which helps to improve the yield and product quality in the adsorption process. The left and right alternating arrangement of the baffles 15 effectively avoids the short-circuit phenomenon of the gas in the adsorption functional section 1, and ensures that the gas is evenly distributed in each adsorption module 10. This design not only improves the adsorption effect, but also reduces the local excessive wear of the hygroscopic layer 11 caused by uneven gas distribution, thereby extending the service life of the hygroscopic layer 11.

[0059] The present invention also provides an air handling unit, see Figure 3 , Figures 4 to 6 The air handling unit includes a primary filter section 2, a medium filter section 3, a surface cooling section 4, a water washing and spraying section 5, a fan section 6, a chemical filter section 7, a high-efficiency filter section 8 and an air outlet section 9 which are connected in sequence, and at least one adsorption functional section 1 is arranged between the surface cooling section 4 and the water washing and spraying section 5; and a bypass static pressure box 100 is arranged above the surface cooling section 4 and the adsorption functional section 1, and the bypass static pressure box 100 is provided with at least three bypass valves 101, wherein two bypass valves 101 are arranged corresponding to the air inlet side and the air outlet side of the surface cooling section 4, and the remaining bypass valve 101 is arranged corresponding to the adsorption functional section 1. The specific structure of the adsorption functional section 1 refers to the above embodiment. Since the air handling unit adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0060] The traditional dehumidification process is an isenthalpic line, which leads to an increase in air temperature and requires a cooling section to be added after the dehumidification section. The adsorption functional section 1 added by the present invention combines adsorption dehumidification and cooling together. Experiments have shown that the dehumidification process will not increase the temperature when combined together. This low-temperature process is more conducive to improving the dehumidification efficiency.

[0061] The bypass static pressure box 100 is set up so that when the surface cooling section 4 and one of the adsorption functional sections 1 do not need to work, the air can directly enter the next processing section through the bypass valve 101, reducing unnecessary energy consumption and improving the energy-saving performance of the entire system. At the same time, the structure of the bypass static pressure box 100 solves the unnecessary air flow resistance caused by the idleness of some pipe sections in winter and summer, and reduces the power consumption of the fan section 6. By setting the bypass static pressure box 100 above the surface cooling section 4 and the adsorption functional section 1, the airflow pressure is effectively balanced, making the air flow in each processing section more uniform, avoiding local airflow dead corners, and improving the uniformity of airflow distribution in the entire system.

[0062] The air handling unit adopts the above-mentioned adsorption functional section 1, which combines the surface cooling section 4, adsorption and desorption processes. The integrated structural design reduces the structural size of the air handling unit, and provides the possibility for the arrangement of air-conditioning units in dense pipelines and small space areas for production plants with complex processes.

[0063] Among them, the surface cooling section 4 is a common section for the hot and cold coils. The hot and cold water in the coils are switched by a three-way valve. The hot water is used to heat the air, and the cold water is used to cool the air. The hot water temperature should not be lower than 40°C, and the chilled water temperature should not be higher than 14°C. The hot water can be derived from waste heat recovery such as heat recovery from chillers and heat recovery from air compressors, and no special boiler is required for heating. Two bypass valves 101 are provided above the air inlet and outlet sides of the surface cooling section 4. The two bypass valves 101 are used to open in the transition season to reduce the resistance of air flowing through the functional section of the air handling unit.

[0064] In one embodiment, see Figure 3 , Figures 4 to 6 A first valve 110 is respectively provided on the air inlet side and the air outlet side of the adsorption functional section 1 , and the bypass valve 101 is located outside the position between the two first valves 110 .

[0065] Specifically, the air treatment device includes a housing, an adsorption functional section 1 is disposed in the housing, a first valve 110 is disposed on the air inlet side of the adsorption functional section 1, and a first valve 110 is disposed on the air outlet side. In addition, the bypass valve 101 is disposed outside the position between the first valve 110 and the first valve 110. The bypass valve 101 here includes two sub-bypass valves 101a, and the two sub-bypass valves 101a are disposed corresponding to the two first valves 110 respectively.

[0066] The shell is made of high-strength stainless steel material with good corrosion resistance and pressure bearing performance. A partition is provided inside the shell to separate the internal space of the shell into the adsorption functional section 1, the air inlet chamber and the air outlet chamber. Both first valves 110 are pneumatic regulating valves, and the opening can be adjusted according to the control system command to control the flow of airflow entering the adsorption functional section 1.

[0067] By setting a first valve 110 on the air inlet side and the air outlet side of the adsorption functional section 1, when the adsorption functional section 1 is not needed, it is only necessary to control the two first valves 110 to be closed, so that the airflow directly enters the bypass static pressure box 100 through the sub-bypass valve 101a, thereby solving the unnecessary air flow resistance caused by the idleness of some pipe sections in some seasons throughout the year, and further reducing the power consumption of the fan section 6.

[0068] In one embodiment, see Figure 3 , Figures 4 to 6 The air handling unit further includes at least two adsorption functional sections 1 connected in sequence, and the two adsorption functional sections 1 are both located between the surface cooling section 4 and the water washing spray section 5; the bypass static pressure box 100 covers the two adsorption functional sections 1.

[0069] The two adsorption functional sections 1 are connected in sequence and are both located between the surface cooling section 4 and the water washing spray section 5. Each adsorption functional section 1 includes a hygroscopic material. The adsorption functional section 1 is located after the surface cooling section 4 and before the water washing spray section 5. Its main function is to dehumidify the air flowing through. The bypass static pressure box 100 covers the two adsorption functional sections 1 and is used to balance the air pressure on both sides of the adsorption functional section 1 to ensure that the air passes through the adsorbent filling layer evenly. The design of the bypass static pressure box 100 enables the air to maintain a stable flow rate and pressure when passing through the adsorption functional section 1, thereby improving the adsorption efficiency.

[0070] In this embodiment, when the first adsorption functional section 1 is adsorbing and the second adsorption functional section 1 is desorbing, the two first valves 110 are opened and the corresponding two bypass valves 101 are closed. The two first valves 110 are set on the air inlet side and the air outlet side of the first adsorption functional section 1, and the corresponding two bypass valves 101 are opened to allow the air to flow through the upper tower of the bypass static pressure box 100 above the second adsorption functional section 1.

[0071] A desorption hot air inlet and a desorption hot air outlet are respectively arranged on both sides of the upper inner side of the two first valves 110, and two bypass valves 101 are respectively installed on the desorption hot air inlet and the desorption hot air outlet. When the second adsorption functional section 1 is in a fully adsorbed state, the corresponding two first valves 110 are closed, and the corresponding two bypass valves 101 are opened. The hot air enters the air handling unit from the air outlet where the bypass valve 101 is located, and flows out from the air outlet where the bypass valve 101 is located, and the first adsorption functional section 1 is desorbed. Close the two bypass valves 101 at the desorption hot air inlet and the desorption hot air outlet on both sides of the upper inner side of the two first valves 110.

[0072] According to this principle, the first adsorption functional section 1 and the second adsorption functional section 1 form a backup for air adsorption through the opening and closing of the first valve 110 and the bypass valve 101. When one of the adsorption functional sections 1 desorbs, the other adsorption functional section 1 performs adsorption, and the cycle is carried out in sequence to ensure the continuous and reliable operation of the air treatment of the air handling unit.

[0073] In one embodiment, see Figure 3 , Figures 4 to 6 The bypass static pressure box 100 includes a main air duct and a first return air duct 102. Three bypass valves 101 are located in the main air duct. The first return air duct 102 is provided with a second valve 103, and the second valve 103 is used to open and close the first return air duct 102; a third valve 120 is provided between the water washing spray section 5 and the fan section 6, and the third valve 120 is used to open and close the secondary return air.

[0074] The air handling unit is a tower structure consisting of two parts, the upper tower being the bypass plenum box 100. The bypass plenum box 100 is divided into three parts in the vertical air flow direction, the middle part being the main air duct, and the first return air duct 102 and the supply and return channels of the desorbed hot air are arranged on both sides.

[0075] The reasonable layout of the main air duct and the first return air duct 102, as well as the ingenious design of the three bypass valves 101, make the air flow smoother, reduce the resistance loss in the air duct, and thus significantly improve the air supply efficiency of the fan. Compared with the prior art, under the same power consumption, the present invention can provide a larger air volume and meet higher ventilation requirements.

[0076] The design of the second valve 103 on the first return air duct 102 provides flexible opening and closing control, so that the system can adjust the return air volume according to actual needs and optimize the indoor air quality. When it is necessary to reduce the indoor and outdoor air exchange, closing the second valve 103 can effectively save energy; and when it is necessary to increase air circulation, opening the second valve 103 can quickly improve the indoor air quality. This design greatly improves the adaptability and flexibility of the system.

[0077] The third valve 120 between the water-washing spray section 5 and the fan section 6 is used to open and close the secondary return air, further improving the operational flexibility of the system. When the secondary return air is not needed, the third valve 120 can be closed to reduce the complexity of the system and simplify the operational process; when the secondary return air is needed, the third valve 120 can be opened to make full use of the heat in the return air and improve the energy efficiency.

[0078] Taking Shanghai as an example of the energy-saving effect of cold and hot sources, the summer outdoor design dry-bulb temperature is t1=34.4℃, the wet-bulb temperature is t3=27.9℃, the specific enthalpy is h1=88.94kj / kg, and the unit outlet temperature and humidity requirements are t2=16℃, φ2=87.19%, d2=9.9g / kg, and h2=41.15kj / kg.

[0079] Before the bypass valve 101 is opened, the resistance of a single adsorption module 10 is 452 Pa under rated conditions (1.8 m / s). After the bypass valve 101 is opened, the resistance is reduced to 146 Pa, a reduction of 68%.

[0080] For the fresh air unit with rated working condition of 50000m³ / h, the full pressure of the unit fan is 2500pa when running under rated working condition, and the fan power is about 30kw. Under the condition that the fan transmission efficiency and motor efficiency remain unchanged, the fan power is proportional to the full pressure of the fan. One coil bypass can reduce the fan shaft power ratio by about 306 / 2500pa=12.24%. According to the working condition setting, the adsorption module is not used for 10 times throughout the year, accounting for 1 / 2 of the whole year. A single unit can save operating energy consumption throughout the year:

[0081] Q1=30*0.25*0.12*24*365*=15768kw.h

[0082] Traditional air handling units use 6-12℃ low-temperature chilled water for dehumidification. According to the Shanghai project, the chiller efficiency is cop=5.46, and the required cooling capacity is:

[0083] 50000*1.02*(88.94-41.15)*24*182 / (5.46*3600)=541620kw.h

[0084] Using the technical solution of the present invention, the supply and return water is 14-20℃ low-temperature chilled water for dehumidification, the energy efficiency of the chiller is cop=7.1, and the required refrigeration capacity is:

[0085] 50000*1.02*(88.94-41.15)*24*182 / (7.1*3600)=416513kw.h

[0086] Save electricity:

[0087] Q2=(541620-416513)=125107kw.h.

[0088] Before the bypass valve 101 is opened, the resistance of a single adsorption module 10 is 452 Pa under rated conditions (1.8 m / s). After the bypass valve 101 is opened, the resistance is reduced to 146 Pa, a reduction of 68%.

[0089] The 40°C hot water required by this structure is obtained by heat recovery from chillers, air compressors, etc., without consuming any energy.

[0090] Year-round saving in operating power consumption:

[0091] Q=Q1+Q2=15768+125107=140875 yuan.

[0092] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An adsorption functional section, applied to an air handling unit, wherein the air handling unit further comprises a surface cooling section and a water washing spray section arranged adjacent to each other, characterized in that: The adsorption functional section is located between the surface cooling section and the water washing and spraying section, and the adsorption functional section includes a plurality of adsorption modules, and the plurality of adsorption modules are arranged at intervals along the same straight line; each of the adsorption modules includes a plurality of moisture absorption layers and a plurality of heat exchange layers, and the plurality of moisture absorption layers and the plurality of heat exchange layers are alternately stacked, and two adjacent heat exchange layers are spaced to form a microchannel, and each of the moisture absorption layers is installed in a microchannel, and the moisture absorption layer is used to absorb moisture from the air, and the microchannel is used to exchange heat and cool the inflowing air with the heat exchange layer; each of the heat exchange layers has at least one flow channel, and the flow channel is used to circulate the heat exchange medium; each of the adsorption modules also includes at least one water inlet pipe and at least one water outlet pipe, the water inlet pipe is connected to one end of the plurality of flow channels, and the water outlet pipe is connected to the other end of the plurality of flow channels; the water flow direction of the flow channel is opposite to the air flow direction of the microchannel; A bypass static pressure box is arranged above the surface cooling section and the adsorption functional section. The air handling unit also includes at least two adsorption functional sections connected in sequence, and the two adsorption functional sections are both located between the surface cooling section and the water washing spray section; the bypass static pressure box covers the two adsorption functional sections.

2. The adsorption functional segment according to claim 1, characterized in that: The water inlet pipe includes a main water inlet pipe section and a plurality of water inlet pipe sections, one end of each of the water inlet pipe sections is respectively connected to the main water inlet pipe section, and the other end of each of the water inlet pipe sections is connected to one end of the plurality of flow channels of the same adsorption module; The water outlet pipe includes a main water outlet pipe section and multiple water outlet pipe sections, one end of each of the water outlet pipe sections is respectively connected to the main water outlet pipe section, and the other end of each of the water outlet pipe sections is connected to the other end of the multiple flow channels of the same adsorption module.

3. The adsorption functional segment according to claim 1, characterized in that: Each of the heat exchange layers includes a plurality of the flow channels, and the plurality of the flow channels are arranged in a mesh shape and are connected.

4. The adsorption functional segment according to claim 1, characterized in that: The adsorption functional section further includes a plurality of baffles, each of which is sealingly installed between two adjacent adsorption modules, and the plurality of baffles are alternately arranged left and right along the arrangement direction of the adsorption functional section.

5. An air handling unit, characterized in that: The air handling unit includes a primary filter section, a medium filter section, a surface cooling section, a water washing and spraying section, a fan section, a chemical filter section, a high efficiency filter section and an air outlet section which are connected in sequence, and at least one adsorption functional section as described in any one of claims 1 to 4 is arranged between the surface cooling section and the water washing and spraying section; and a bypass static pressure box is arranged above the surface cooling section and the adsorption functional section, and at least four bypass static pressure boxes are arranged.

6. The air handling unit according to claim 5, characterized in that: The number of bypass static pressure boxes is four, two of which are arranged corresponding to the air inlet side and the air outlet side of the surface cooling section, and the remaining two bypass static pressure boxes are arranged corresponding to the adsorption functional section.

7. The air handling unit according to claim 5, characterized in that: A first valve is respectively arranged on the air inlet side and the air outlet side of the adsorption functional section, and the bypass static pressure box is located outside the position between the two first valves.

8. The air handling unit according to claim 5, characterized in that: The bypass plenum box includes a main air duct and a first return air duct, the three bypass plenum boxes are located in the main air duct, the first return air duct is provided with a second valve, and the second valve is used to open and close the first return air duct; And / or, a third valve is provided between the water washing spray section and the fan section, and the third valve is used to open and close the secondary return air.

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